Wiring Examples
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7
Wiring Examples
This section provides wiring examples to connect a Braking Unit and other peripheral devices to the main
circuits, examples of wiring a transformer to Inverter I/O, and other aspects of Inverter wiring.
Using a Braking Resistor Unit
This example shows wiring for a Braking Resistor Unit.
3G3PV-A2004-E to 3G3PV-A2185-E (200-V class Inverters of 0.4 to 18.5 kW)
3G3PV-4004-E to 3G3PV-A4185-E (400-V class Inverters of 0.4 to 18.5 kW)
Fig 10.2
* 1. A transformer is not required for 200-V class
* 2. Remove the short-circuit bar (normally connected) from + 1 and
+ 2 when connecting a DC Reactor (Optional).
* 3. Disable stall prevention during deceleration by setting L3-04 and
using a Braking Resistor Unit. The motor may not stop within the
deceleration time if this setting is not changed.
3-phase power
200 to 230 V 50/60 Hz
or 380 to 460 V
50/60 Hz
A sequence is required to turn
OFF the power supply for the ther-
mal overload relay trip contacts of
the Braking Resistor Unit.
Short-circuit
DC Reactor to
improve input
power factor
Braking Resistor overheating contacts
(Thermal overload relay trip contacts)
Braking Resistor Unit
*3
Inverter
Overload relay trip contact
of Braking Resistor Unit
Fault contacts
Motor
200-V class Inverters: Ground to
100
Ω
max., 400-V class Inverters:
Ground to 10
Ω
max.)
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
MC
